dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Klekowski, Edward J - Poppel, David M
    Type: Article
    In: American fern journal
    Volume: 66
    Date: 1976
    Page Range: 75--79
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Klekowski, Edward J
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 59
    Date: 1972
    Page Range: 138--151
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-